Hello

I am getting set to use align_epi_anat.py. I noticed that it uses slice timing correction as a default for EPI data, prior to motion correction with 3dvolreg.

I looked around some, and I was not able to find a strong justification for this approach over alternatives:
- not doing correction
- applying the slice timing correction after motion correction

It makes sense to me intuitively that the slice correction first would be a better plan, because error is introduced after the interpolation from motion correction. But then again, the same argument might work in reverse - error is added when you interpolate the slice timing correction, which is then propagated further when interpolating the motion correction.

Has anyone carefully worked out the details of this mess?

Thanks
Daniel